The Command Line Tool serves as the client interface to the Auto Scaling web service. Use this tool to create auto scaling groups and define policies to launch and terminate Amazon EC2 instances automatically.

The Command Line Tool serves as the client interface to the Amazon CloudWatch web service. Use this tool to monitor, manage, and publish Amazon CloudWatch metrics, as well as configure alarm actions based on data from metrics.

The AWS Toolkit for Eclipse is a plug-in for the Eclipse Java IDE that makes it easier for developers to develop, deploy, and debug Java applications using Amazon Web Services. With the AWS Toolkit for Eclipse, you'll be able to get started faster and be more productive when building AWS applications.